Question

What expression gives the solutions of –5 + 2x² = –6x?

Answer 1

rewrite is as:
\[2x^2+6x-5=0\\
(2x+a)(x+b)=0\\
\text{where}\;a\times b=-10\qquad a+b=6\]
or use the quadratic formula

Answer 2

if\[ax^2+bx+c=0\\
\text{thetn}\quad x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\]

Answer 3

i dont think i quite understand

Answer 4

1. rewrite the given equation in standard form..
\[-5+2x^2=-6x\\
2x^2+6x-5=0\]
ok till here?

Answer 5

yeah

Answer 6

then use the quadratic formula from above.

Answer 7

a="2"
b="6" and
c="-5"

Answer 8

you will obtain two values for "x"

Answer 9

i lose it there. i dont understand quadratic equations at all